>Does anybody know of a concrete example of an LALR(1)-conflict in an existing>(or hypothetical but semantically meaningful) programming language grammar>which is *exactly* LALR(1), i.e. the conflict is solved by moving to LR(1)?

Here's a real example I came across. It's from the "Arden Syntax",
the formal specification (ASTM E1460) of which I am currently editing: